Can I have two different cancellation policies/legal agreements for a single listing?

My property is highly seasonal. In the winter, a guest will book a year in advance for a 3 month minimum booking. I want a no refund policy associated with those 3 months of the year; i.e., January, February, and March.

For the remaining months, I'm more flexible and can have guests cancel 14 days prior to arrival with no penalty except a $60 cancellation fee.

I'm also integrated with Airbnb and VRBO, but VRBO always handles my seasonal rentals that are booked a year in advance.

Is there a way to set up OwnerRez to handle two different legal agreements and cancellation policies based on the timeframe?

Unfortunately no, because we have to integrate with Vrbo and they don't support that at present.  We've asked, and likely they will eventually.